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Statistical Methods for Evaluating Soil Salinity Spatial and Temporal Variability

^a Research Unit on Environ. and Conserv. of Natural Resources, National Institute of Agric. Res. (INRA), Avenue Hassan II BP 415, 10000 Rabat, Morocco
^b Dep. of Soil Management and Soil Care, Ghent Univ., Coupure 653, 9000 Gent, Belgium
^c Research Institute for Soil Science and Agricultural Chemistry, Hungarian Academy of Sciences, Herman Otto ùt 15, PO Box 35, 1525 II Budapest, Hungary

View larger version (28K): [in this window] [in a new window]   Fig. 1. Map of Hungary with the Great Hungarian Plain and the test site inside the Hortobagy region.

View larger version (19K): [in this window] [in a new window]   Fig. 2. Study area with locations where apparent electrical conductivity was measured and where samples were taken to determine electrical conductivity in a 1:2.5 soil/water suspension (in this figure all 20 locations are indicated, but due to practical limitations, locations 1 to 7 could not be sampled at some of the 19 dates).